Enhanced Modeling of GHG Emissions and Mitigation in NEMS Component Design Report

Summary

The U.S. Department of Energy (DOE) is enhancing its National Energy Modeling System (NEMS) to achieve comprehensive net-zero greenhouse gas (GHG) modeling by 2050. Currently, the enhanced FECM-NEMS model covers 81% of gross U.S. GHG emissions, but 19% of emissions and 25% of mitigation pathways are missing, particularly non-CO2 GHGs and land-use removals. In 2021, total U.S. gross GHG emissions were 6,340 MMT CO2 equivalent, with the LULUCF sector providing -754 MMT CO2 eq. in removals. The report proposes integrating missing emissions and mitigation options using emissions factors, marginal abatement cost curves, and specific technologies, aiming to diversify net-zero pathways beyond the current reliance on up to 3,000 MMT CO2 per year from Direct Air Capture.

Key Facts

Source Document

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